Make python3 default shebang

snippets/python.snippets

@@ -1,12 +1,10 @@
 snippet #!
-	#!/usr/bin/env python
+	#!/usr/bin/env python3
 snippet #!2
 	#!/usr/bin/env python2
 	# coding: utf-8
 snippet utf
 	# coding: utf-8
-snippet #!3
-	#!/usr/bin/env python3
 snippet dbg Python Debugger abbrv
 	__import__('pdb').set_trace()
 snippet ipdb ipdb abbrv